<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>

  <form action="/wxpay/payment/create" method="post">
      请输入购买的东西:<input name="body"> <br>
      <input type="submit">
  </form>
</body>
</html>